/Engine/Plugins/Developer/Concert/ConcertSync/ConcertSyncCore/Source/ConcertSyncCore/Public/ConcertPackageEvents.h
struct FConcertBeginSendPackageParams : public [UE::ConcertSyncCore::ConcertPackageEvents::FConcertBaseSendPackageParams](API\Plugins\ConcertSyncCore\FConcertBaseSendPackageParams)
uint64
PackageNumBytes
The size of the package data to be received